Mobile: Deep folder nesting results in unreadable titles

[personalizedrefrigerator]

Operating system

Android

Joplin version

2.14

Desktop version info

No response

Current behaviour

See https://discourse.joplinapp.org/t/problem-of-not-being-able-to-view-entire-long-notebook-titles/35669/5 (mentions issue related to mobile).

To reproduce:

1. Nest 10 notebooks
2. Create a note
3. Open the "notebook selector" dropdown
4. Try to select one of the deepest-nested notebooks.

Screenshot:

Expected behaviour

• The folder selector should support the same level of nesting as the sidebar.

Logs

No response

[personalizedrefrigerator]

Possible (half) solution: Decrease indentation amount as folders are nested deeper.

Notes:

• Currently, we use a FlatList with a constant item height to display notebooks. This should improve performance when there are a large number of notebooks.
• Wrapping the FlatList in a horizontal ScrollView is another possible solution (implemented here). However, this would also change the behavior of the notebook list for users that don't have deeply-nested notebooks. I'm also worried about potential issues caused by nesting a FlatList within a ScrollView (as both support scroll).